diff --git a/example/timestamp-as-a-service/services/api/requirements.txt b/example/timestamp-as-a-service/services/api/requirements.txt
index dcc7bdf..0da35fb 100644
--- a/example/timestamp-as-a-service/services/api/requirements.txt
+++ b/example/timestamp-as-a-service/services/api/requirements.txt
@@ -9,4 +9,4 @@ itsdangerous==1.1.0
 Jinja2==2.11.3
 MarkupSafe==1.1.1
 redis==3.2.1
-Werkzeug==0.15.3
+Werkzeug==2.2.3